The global property of the dilute-to-dense transition of granular flows in a 2D channel

M. Hou, W. Chen, Z. Peng, T. Zhang, K. Lu, C. K. Chan

研究成果: 書貢獻/報告類型會議論文篇章同行評審

摘要

The dilute-to-dense transition of granular flow of particle size d 0 is studied experimentally in a two dimensional channel (width D) with confined exit (width d). It is found that there exists a maximum inflow rate Qc, above which the outflow changes from dilute to dense and the outflow rate Q(t) drops abruptly from Qc to a dense flow rate Q d. The re-scaled critical rate qc(≡Q c/(D/d0)) is found to be a function of a scaling variable λ only, i.e. qc ∼ F(λ), and λ ≡d/d0 d d/D-d. This form of λ suggests that the dilute-to-dense transition is a global property of the flow; unlike the jamming transition, which depends only on d/d0. The transition is found to occur when the area fraction of particles near the exit reaches a critical value 0.65±0.03.

原文???core.languages.en_GB???
主出版物標題Traffic and Granular Flow 2003
發行者Springer Berlin Heidelberg
頁面559-567
頁數9
ISBN(列印)3540258140, 9783540258148
DOIs
出版狀態已出版 - 2005
事件5th International Workshop on Traffic and Granular Flow, TGF 2003 - Delft, Netherlands
持續時間: 1 10月 20033 10月 2003

出版系列

名字Traffic and Granular Flow 2003

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???event.eventtypes.event.conference???5th International Workshop on Traffic and Granular Flow, TGF 2003
國家/地區Netherlands
城市Delft
期間1/10/033/10/03

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